Mapping the Great Barrier Reef: the Catlin Seaview Survey

Scientists warn that more than 50 per cent of the Great Barrier Reef's coral
has been wiped out over the past 30 years, and predict that another half of
the remainder could have gone by 2022 - meaning the reef will have shrunk to
just a third of its size in half a century. Researchers have launched an
urgent bid to catalogue the flora and fauna that remain. The project, which
began by Google
mapping selected areas of the reef for web users to view online, will
also provide the first detailed view of the deeper layers of the reef.